/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package lib

const (
	PhonyRule uint8 = iota
	NormalRule
)

type Rule struct {
	Name string
	Vars map[string]*VarString
	Type uint8
}

var DefaultPhonyRule = &Rule{
	Name: "phony",
	Vars: map[string]*VarString{},
	Type: PhonyRule,
}

func NewRule(name string) *Rule {
	return &Rule{
		Name: name,
		Vars: make(map[string]*VarString),
		Type: NormalRule,
	}
}

func (r *Rule) AppendVar(k string, v *VarString) {
	r.Vars[k] = v
}

func (r *Rule) QueryVar(k string) *VarString {
	if v, ok := r.Vars[k]; ok {
		return v
	}
	return nil
}
